UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of the
Securities Exchange Act of 1934

Filed by the Registrant	x
Filed by a Party other than the Registrant	¨

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¨ Preliminary Proxy Statement

¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

¨ Definitive Proxy Statement

x Definitive Additional Materials

¨ Soliciting Material under §240.14a-12

ARMATA PHARMACEUTICALS, INC.

(Name of Registrant as Specified in its Charter) 

(Name of Person(s) Filing Proxy Statement, if Other Than the Registrant)

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¨ Fee computed on table below per Exchange Act Rules 14a-6(i)(1) and 0-11.

(1) Title of each class of securities to which transaction applies:

(2) Aggregate number of securities to which transaction applies:

(3) Per unit price or other underlying value of transaction computed pursuant to Exchange Act Rule 0-11 (Set forth the amount on which the filing fee is calculated and state how it was determined):

(4) Proposed maximum aggregate value of transaction:

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¨ Fee paid previously with preliminary materials.

¨ Check box if any part of the fee is offset as provided by Exchange Act Rule 0-11(a)(2) and identify the filing for which the offsetting fee was paid previously. Identify the previous filing by registration statement number, or the Form or Schedule and the date of its filing.

(1) Amount Previously Paid:

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Step 1: Go to www.envisionreports.com/ARMP. Step 2: Click on Cast Your Vote or Request Materials. Step 3: Follow the instructions on the screen to log in. www.envisionreports.com/ARMP Online Go to www.envisionreports.com/ARMP or scan the QR code — login details are located in the shaded bar below. Shareholder Meeting Notice 03C25B + + Important Notice Regarding the Availability of Proxy Materials for the Armata Pharmaceuticals, Inc. Shareholder Meeting to be Held on December 8, 2020 Under Securities and Exchange Commission rules, you are receiving this notice that the proxy materials for the annual shareholders’ meeting are available on the Internet. Follow the instructions below to view the materials and vote online or request a copy. The items to be voted on and location of the annual meeting are on the reverse side. Your vote is important! This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. We encourage you to access and review all of the important information contained in the proxy materials before voting. The notice of annual meeting, proxy statement and annual report to shareholders are available at https://investor.armatapharma.com/annual-reports-and-proxy or Obtaining a Copy of the Proxy Materials – If you want to receive a copy of the proxy materials, you must request one. There is no charge to you for requesting a copy. Please make your request as instructed on the reverse side on or before November 27, 2020 to facilitate timely delivery. 2 N O T Easy Online Access — View your proxy materials and vote. When you go online, you can also help the environment by consenting to receive electronic delivery of future materials. Votes submitted electronically must be received by December 7, 2020 at 11:59 p.m., Eastern Time. Step 4: Make your selections as instructed on each screen for your delivery preferences. Step 5: Vote your shares. MMMMMMMMMMMM MMMMMMMMM MR A SAMPLE DESIGNATION (IF ANY) ADD 1 ADD 2 ADD 3 ADD 4 ADD 5 ADD 6 ENDORSEMENT_LINE______________ SACKPACK_____________ 1234 5678 9012 345 C 1234567890 C O Y 000004 MMMMMMM

 

Here’s how to order a copy of the proxy materials and select delivery preferences: Current and future delivery requests can be submitted using the options below. If you request an email copy, you will receive an email with a link to the current meeting materials. PLEASE NOTE: You must use the number in the shaded bar on the reverse side when requesting a copy of the proxy materials. — Internet – Go to www.envisionreports.com/ARMP. Click Cast Your Vote or Request Materials. — Phone – Call us free of charge at 1-866-641-4276. — Email – Send an email to investorvote@computershare.com with “Proxy Materials Armata Pharmaceuticals, Inc.” in the subject line. Include your full name and address, plus the number located in the shaded bar on the reverse side, and state that you want a paper copy of the meeting materials. To facilitate timely delivery, all requests for a paper copy of proxy materials must be received by November 27, 2020. Armata Pharmaceuticals, Inc.’s Annual Meeting of Shareholders will be held on December 8, 2020 at 4503 Glencoe Avenue, Marina del Rey, California 90292, at 8:30 A.M. local time. Proposals to be voted on at the meeting are listed below along with the Board of Directors’ recommendations. The Board of Directors recommend a vote FOR all of the director nominees listed in Proposal 1, FOR Proposals 2 and 4 and for every 1 YEAR on Proposal 3: 1. Election of Directors: 01 - Todd R. Patrick 02 - Richard J. Bastiani, Ph.D. 03 - Sarah J. Schlesinger, M.D. 04 - Joseph M. Patti, Ph.D. 05 - Odysseas D. Kostas, M.D. 06 - Todd C. Peterson, Ph.D. 07 - Robin C. Kramer 2. To approve, on an advisory, non-binding basis, the compensation of our named executive officers 3. To approve a non-binding advisory resolution on the frequency of stockholder vote (every one, two or three years) relating to the compensation of our named executive officers 4. To ratify the Audit Committee’s selection of Ernst & Young LLP as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2020 PLEASE NOTE – YOU CANNOT VOTE BY RETURNING THIS NOTICE. To vote your shares you must go online or request a paper copy of the proxy materials to receive a proxy card. If you wish to attend and vote at the meeting, please bring this notice with you. Shareholder Meeting Notice